Name | Acid Blue 129 |
Synonyms | Blue P-R Acid Blue 129 Sodium 1-amino-4-(2,4,6-trimethylanilino)anthraquinone-2-sulfonate 1-Amino-9,10-dihydro-9,10-dioxo-4-[(2,4,6-trimethylphenyl)amino]-2-anthracenesulfonic acid monosodium salt |
CAS | 6397-02-0 |
EINECS | 229-008-4 |
InChIKey | RRETZLLHOMHNNB-UHFFFAOYSA-M |
Molecular Formula | C23H19N2NaO5S |
Molar Mass | 458.46 |
Melting Point | >300°C |
Storage Condition | Room Temprature |
Physical and Chemical Properties | The solubility of chemical properties in water is poor, the solubility (90 ℃) is 10g/L, the aqueous solution is blue, precipitation appears for a long time, the color of hydrochloric acid is unchanged, accompanied by precipitation; the addition of sodium hydroxide is blue and purple, accompanied by precipitation. It is blue in concentrated sulfuric acid, and turns red and blue after dilution. It is ginger yellow in concentrated nitric acid. |
Use | Uses Weak acid brilliant blue P-R is mainly used for dyeing and printing wool, silk, nylon and their fabrics. Good leveling, bright color and good fastness. It is used alone to dye brilliant blue above medium depth. It is also used for color matching and color adjustment, and is less used for light colors. It can also be used for leather coloring. |
Hazard Symbols | Xi - Irritant |
Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
WGK Germany | 3 |
RTECS | CB1035000 |
Raw Materials | Sodium bicarbonate Copper(I) chloride Bromaminic acid 2,4,6-Trimethylaniline 2,4,6-Trimethylaniline Bromaminic acid |
Downstream Products | Acid Blue 129:1 |
color index | 62058 |
EPA chemical information | 2-Anthracenesulfonic acid, 1-amino-9,10-dihydro-9,10-dioxo-4-[(2,4,6-trimethylphenyl)amino]-, monosodium salt (6397-02-0) |
Acid Blue 129, also known as Acid Red 3G, is a synthetic dye commonly used in the dye industry. The following is the production method of Acid Blue 129:
1. Raw material preparation: First, prepare raw materials such as 4-methylaniline, benzoic acid red C, benzyl chloride, sodium hydroxide, sulfuric acid, etc. Ensure the purity and quality of raw materials.
2. Methylation reaction: Mix 4-methylaniline with an appropriate amount of benzylidene chloride in a suitable solvent (such as methanol) and add an appropriate amount of catalyst. During the reaction process, control the temperature and time to carry out methylation reaction to generate 4-methylphenylchloromethane.
3. Substrate dissolution: Dissolve benzene brick red C in water, control solubility and concentration.
4. Coupling reaction: Add the methylated product 4-methylphenylchloromethane to the substrate solution, add a certain amount of alkaline solution (such as sodium hydroxide solution), control the reaction conditions (temperature, pressure, pH value, etc.), and carry out the coupling reaction.
5. Dye separation: The reaction mixture is treated with acid to separate the dye from the solution.
6. Purification and drying: Purify the separated dyes and use appropriate methods (such as crystallization, filtration, washing, etc.) to remove impurities. Then, dry the dye to obtain Acid Blue 129.